Car-brake.



- No. 648,434 Patented May I, I900.

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CAR BRAKE.

Application filed Dec. 8 1899.1

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Patented' May I, I900.

c. RICHARD. CAR BRAKE.

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(No Model.)

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NITED STATES PATENT Fries.

CAMILLE RICHARD, OF MONTREAL, CANADA, ASSIGNOR TO L. M. LYMBIIRNER ANDJ. E. MATHEWS, OF SAME PLACE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 648,434, dated May 1,1900.

Application filed December 6, 1899- SerialNo. 739,336. (No model.)

T0 whom it may concern:

Be it known that I, OAMILLE RICHARD, a subject of Her Majesty the Queenof Great Britain, residing in the city and district of Montreal,Province of Quebec, Canada, have invented certain new and usefulImprovements in Oar-Brakes; and I do hereby declare that the followingis a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to car-brakes which are especially adapted foruse on street-cars; and its object is to provide an improved brakemechanism which is simple in construction, effective and powerful inoperation, and which may be manufactured at a moderate cost. I

To these ends the invention consists in a brake mechanism constructedsubstantially as hereinafter illustrated and described, and defined inthe appended claim.

Referring to the drawings, in which similar letters of referenceindicate similar parts, Fig- 11 re 1 is a View in elevation of theforward end of a street-car provided with a brake mechanism constructedin accordance with this invention. Fig. 2 is an end view of thehanger-frame. Fig. 3 is a side view thereof. Fig. 4 is an end view of adetail, and Fig. 5 is a side View thereof.

In the drawings, A represents a car which may be of any u'sualor'preferred kind and provided with the usual brake a and the rotarybrake-rod a. To the brake-beam is pivotally connected the lower end of asuitable lever a which is pivoted at an intermediate point to a suitablesupport. To the upper end of the lever a is attached a suitable rod ahaving a hook at its outer end, to which is connected one end of a chaina the other end of which is suitably secured to one portion of thedouble cam B B, sleeved upon the shaft 1) at the point of longest radiusof said cam. The lower end of the brake-rod a is simultaneouslyconnected, by means of a suitable chain a to the other portion of thedouble cam B B, the connection being a simple hook I) or rivet or othersuitable means.

The double cam 13 B is preferably splined upon the shaft 1), which isjournaled in suitable bearings d, formed upon the lower ends of thehanger-frame D, which is secured at a suitable point upon the under sideof the car A, as shown in Fig. 1. The frame Dis preferably constructedof a base-plate d, having depending arms (1 as shown in Figs. 2 and 3.

The double cam B B is preferably formed in one piece, though it isobvious that each cam may be constructed separately and united in anysuitable manner, as by means of bolts and rivets. Each cam is preferablyin the form of a helix, and they are so mounted upon the shaft 1) thatthe longest radius of the one is adjacent to the shortest radius of theother, as is clearly shown in Fig. 5. By means of this constructionthere is provided a cam-le ver for the chain a and a separate lever forthe chain a, thus affording a powerful leverage occupying acomparatively-small space. It is obvious that by attaching the end ofeach chain to the cam at the point of longest radius the slack will betaken up quickly by the first movement of the hand brake-rod and theleverage increased, so that the subsequent movement 'of the brake-rodwill effect a pow erful braking action.

While I have herein shown a preferred form of carrying my invention intoeffect, yet I do not desire to limit myself to such preferred details ofconstruction, but claim the right to use any and all modificationsthereof which will serve to carry into eifect the objects to be attainedby this invention in so far as such modifications and changes may fallwithin the spirit and scope of my said invention.

I claim- A brake mechanism, comprising a brakeshoe; a lever pivotedthereto; a hanger-frame; a double cam-lever journaled in said frame,said cams being constructed in the form of a helix and arranged side byside a connection between said double c'am-lever and the brakelever; abrake-rod; and a connectionbetweeu said brake-rod and said doublecam-lever,substantially as described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

OAMILLE RICHARD. lVitnesses:

J. A. MARION, R. A. DE OLLOQUI.

